Beam propagation analysis for tapered waveguides: Taking account of the curved phase-front effect in paraxial approximation

Ching Ting Lee, Mount Learn Wu, Jui Ming Hsu

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A novel equivalent waveguide theory based on the conformal mapping method is employed to investigate the tapered waveguide with curved phase fronts. By using the theory, the curved phase fronts of a tapered waveguide would be transformed into the planar ones of its equivalent straight-liked structure. Therefore, the paraxial beam propagation method can be used to analyze the equivalent structures of tapered waveguides (even for wide-angle tapers). Two kinds of popular tapered waveguides, including the cross-sectional dimension tapering and the constant V-number tapering, are used to analyze by our combination of conformal mapping method and beam propagation method (BPM).

Original languageEnglish
Pages (from-to)2183-2189
Number of pages7
JournalJournal of Lightwave Technology
Volume15
Issue number11
DOIs
Publication statusPublished - 1997 Nov 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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